Product Review: Endress+Hauser iTEMP TMT162
Temperature measurement can be anything from a simple monitoring application to a critical aspect of the process and its product quality. In the last product review of the month, I’m bringing a big vendor with a high-end device. Guess who? Yes, we’ve got Endress+Hauser rocking Visaya again! The iTEMP TMT162 is a high-end field temperature transmitter with outstanding features and a very cool display! Let’s check out how this device might fit in a new application.
Disclaimer: This product review examines only features, not performance. If you’ve used this device, feel free to share your experience in the comments.
Whatcha got there?
A seriously cool display, I’m telling ya! I remember visiting a customer and spotting this device. Its display caught my attention, and someone told me it came from Endress+Hauser.
The iTEMP TMT162 has a traditional design with Endress+Hauser’s colors so you can easily identify it. It comes in different housing materials: die-cast aluminum, stainless steel, and a stainless steel for hygienic applications. The display gives you process variables, bar graphs, status reports, alarms, and an elegant backlight.
However, the iTEMP TMT162 doesn’t follow the E+H philosophy on local push buttons or touch screens. You need a field communicator to access the menu and configure the device. Of course, many similar transmitters from big vendors skip local setup, but we have good choices from smaller vendors bringing the local, if you want it.
As for integration, this device offers analog, HART, FOUNDATION Fieldbus (FF), and PROFIBUS PA, all common protocols. However, it lacks a wireless option. Sure, you can connect an adapter, but you’ll drain the battery. Europe still doesn’t consider wireless relevant, but North and South America sure do! Might want to get on that, E+H.
What can it do?
The iTEMP TMT162 has two flexible inputs that can connect sensors other than standard temperature elements. It can read resistance temperature detectors (RTDs), thermocouples, millivolts, and resistance, giving you loads of possibilities! For instance, you can fit this device to read a load cell with resistance output and have an output in percentage.
The accuracy depends on the sensor and other factors. In the manual, you can find the digital accuracy of various sensors and their measurement ranges. For example, the Pt100 has an accuracy of 0.1 degree Celsius, and thermocouples can present an accuracy from 0.25 to 1 degree Celsius, depending on the type. The resistance input has a measuring range from 10 t0 400 ohms or 10 to 2000 ohms with an accuracy from 0.04 to 0.08 ohms. The voltage input can read from -20 to 100 millivolts with an accuracy of +-10 millivolts.
You can install the sensor locally or remotely, so you may think it doesn’t make any difference, and from the technical side, you’re right. But if you have a field operator that needs to check the temperature, then a remote installation will make a huge difference. We’ve reviewed devices that force you to choose remote or local. Sucks, I know, but that’s the market reality.
Why should I care?
Because the iTEMP TMT162 is a robust field transmitter with a cool display! 🙂 Jokes aside, it gives you the option of two measurements in one field device, and these two inputs have new functions on top of that. First, we have the sensor backup; if one sensor fails, then the device will switch the output to the second sensor without interruption and set off an alarm.
You can also have sensor drift detection. If you have two sensors with a deviation between them against a specified value, the transmitter will provide an alarm or warning message. Last but not least, you have a bunch of approvals and certifications for harsh and hazardous areas or hygienic applications. You can see this huge list in the manual.
The iTEMP TMT162 is an high-end device with good features and possibilities for your application. It lacks local setup, but you can use a handheld or another tool, and its advanced options for the dual sensors makes for good diagnostics in critical applications.